54667640 has 32 divisors (see below), whose sum is σ = 123212880. Its totient is φ = 21829632.

The previous prime is 54667633. The next prime is 54667643. The reversal of 54667640 is 4676645.

It is a junction number, because it is equal to n+sod(n) for n = 54667594 and 54667603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54667643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44312 + ... + 45528.

Almost surely, 2^54667640 is an apocalyptic number.

It is an amenable number.

54667640 is an abundant number, since it is smaller than the sum of its proper divisors (68545240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

54667640 is a wasteful number, since it uses less digits than its factorization.

54667640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2351 (or 2347 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 38.

The square root of 54667640 is about 7393.7568258633. The cubic root of 54667640 is about 379.5276679921.

It can be divided in two parts, 546 and 67640, that added together give a palindrome (68186).

The spelling of 54667640 in words is "fifty-four million, six hundred sixty-seven thousand, six hundred forty".